Shiga Kenritsu Kindai Bijutsukan is 8.7 mi (14 km) from central Otsu, why not stop by during your stay. It's also full of great shops and restaurants, so you can spend the afternoon having a wander. If you want to experience more of the culture Otsu has to offer, head to Ishiyamadera Temple, Aeon Mall Kusatsu, and Otsu City Science Museum.